INSECTICIDE SUSCEPTIBILITY TESTS OF AEDES TAENIORHYNCHUS IN YUCATAN, MEXICO

We report results of susceptibility tests for Aedes taeniorhynchus from 2 localities of Yucatan State, Mexico, to different insecticides. The Centers for Disease Control and Prevention bottle bioassays were performed using the active ingredients of 3 pyrethroids, 2 organophosphates, and 1 carbamate: permethrin (15 mu g/ ml), deltamethrin (10 mu g/ml), alpha-cypermethrin (10 mu g/ml), malathion (50 mu g/ml), chlorpyrifos (85 mu g/ml), and bendiocarb (12.5 mu g/ml). The mortality recorded at the diagnostic time of exposure (30 min) was 100% with all insecticides evaluated and for both populations. These results suggest complete susceptibility to the 3 chemical groups generally used for urban Ae. aegypti mosquito control.